Grade 10 Physics EOT Term 2 Example Questions Question A1 An experiment was performed to determine the relationship between the force on a current carrying wire and the current through the wire. The result of the experiment are shown on the graph below. Given that and L? , what is the slope of the graph equal to in terms of B Question A2a The diagram below represents a magnetic field, describe the directions of magnetic field. Question A2b The diagram below represents a magnetic field, describe the directions of magnetic field. 1 Grade 10 Physics EOT Term 2 Example Questions Question A3a On the x,y graph shown below, two points are selected on the best fit. Derive an equation for the slope in terms of x1, x2, y1, y2. Question A3b Calculate the slope of the straight line graph shown below. Question A4 The right-hand rule can be used to relate the directions of force, current and magnetic field. On the diagram below label force, current and magnetic field 2 Grade 10 Physics EOT Term 2 Example Questions Question A5a A student measures the mass of a storage box on a balance, the mass is 3.523 kg Expressed the mass of the storage box in grams? Question A5b A student measures the mass of a storage box on a balance, the mass is 4523 kg Expressed the mass of the storage box in kilograms? Question A6a A toy car has a mass of 2.4 kg, what is the weight of the toy car? (Use g =10 N/kg) Question A6b A toy car has a weight of 15 N, what is the mass of the toy car? (Use g =10 N/kg) Question A7 The diagram below represents the counter clockwise magnetic field around a current carrying wire. On the diagram draw arrows to represent the direction of the magnetic field at positions A and B. Question A8a Given that 𝑁 𝐼 = 𝐼 𝑁 What is Ns equal to? Question A8a Given that What is I equal to? 3 Grade 10 Physics EOT Term 2 Example Questions Question B1a Complete the statements below. Question B1b The figure below shows five disk magnets floating above one another. The north pole of the top-most disk faces up. Which poles are on the top side of each of the other magnets? 4 Grade 10 Physics EOT Term 2 Example Questions Question B2a The direction of the current I, through a solenoid is shown in the diagram below. On the diagram label the north and south pole. Question B2b The direction of the current I, through a solenoid is shown in the diagram below. On the diagram label the north and south pole. Question B3a The diagram below represents the magnetic field lines around two bar magnets. Identify the poles at positions A and B. 5 Grade 10 Physics EOT Term 2 Example Questions Question B3b Draw the magnetic field line around a single bar magnet shown below. Question B4a The current I, through a vertical current carrying wire is directed into of the page as shown below. Draw and state the direction of the magnetic field at point P located to the west of the wire. Question B4b The current I, through a vertical current carrying wire is directed into of the page as shown below. Draw and state the direction of the magnetic field at point P located to the north of the wire. 6 Grade 10 Physics EOT Term 2 Example Questions Question B5a A beam of protons travels at 3.0 × 106 m/s at right angles to a uniform magnetic field. If the force acting on the electron is 1.9 × 10-19 N, what is the magnitude of the magnetic field? Question B5b A beam of electrons travels at 3.0×106 m/s through a uniform magnetic field of 4.0×10−2 T at right angles to the field. How strong is the force acting on each electron? Question B6a An electron charge moving with a constant velocity v enters a region of uniform magnetic field pointing out the page, as shown below. What is the direction of the magnetic force on the charge as it enters the magnetic field? Question B6b What is the direction of the force acting on the proton shown in diagram below? Question B7a The maximum potential difference of AC electricity supplied to a home is 165 V. What is the effective potential difference of AC electricity supplied to the home? Question B7b The RMS potential difference of an AC household outlet is 117 V. What is the maximum potential difference across a lamp connected to the outlet? 7 Grade 10 Physics EOT Term 2 Example Questions Question B8a The diagrams below show the wire loop in an AC generator at two positions during its rotation. In which diagram will the induced current have a maximum value? Question B8a The diagrams below show the wire loop in an AC generator at two positions during its rotation. In which diagram will the induced current have a minimum value? Question B9a An AC generator produces an average power of 2000 W. Calculate the maximum power produced by the generator. Question B9b An AC generator produces a maximum power of 4000 W. Calculate the average power produced by the generator. 8 Grade 10 Physics EOT Term 2 Example Questions Question B10a A step-up transformer has a primary coil consisting of 200 turns and a secondary coil consisting of 3000 turns. The primary coil is supplied with an effective AC potential difference of 90.0 V. What is the potential difference in the secondary circuit? (Assume the transformer is 100% efficient) Question B10b A step-up transformer has a primary coil consisting of 200 turns and a secondary coil consisting of 3000 turns. The primary coil is supplied with an effective AC potential difference of 90.0 V. The current in the secondary circuit is 2.0 A. What is the current in the primary circuit? (Assume the transformer is 100% efficient) Question B11a A constant current through a coil of will result in a self-induced EMF in a coil of wire. True/False Question B11b An increasing current through a coil of will result in a self-induced EMF in a coil of wire. True/False 9 Grade 10 Physics EOT Term 2 Example Questions Question B12a What is the wavelength of green light that has a frequency of 5.70 × 1014 Hz? (Use c = 3 × 108 m/s) Question B12b What is the frequency of an electromagnetic wave that has a wavelength of 2.2 × 10−2 m? (Use c = 3 × 108 m/s) 10 Grade 10 Physics EOT Term 2 Example Questions FRQ 1 A student performed an experiment to determine the magnetic field strength of the field between two bar magnets. A current carrying wire was fixed in position between two bar magnets which were attached to a “U shaped” piece of steel, which was placed on a balance, as shown in the diagrams below. The length of the wire in the magnetic field was 10 cm, the current through the wire was changed and the mass reading on the balance was measured. The results of the experiment are shown in the table in part b of this question. a. The data from the experiment is shown in the table below. The reading on the balance was given in grams. Complete the last column of the table by converting the “reading on balance” in grams to Newtons. (The first one is done for you) Length of wire (m) 0.10 0.10 0.10 0.10 0.10 Current through wire (A) 1.00 2.00 3.00 4.00 5.00 Reading on Balance (g) 1.40 3.12 4.62 6.24 7.39 Force on Wire (N) 0.014 b. i. Plot a graph of the force on wire versus current through wire and draw a line of best-fit on the graph c. Use the slope of the line of best-fit, calculate the magntitude of the magnetic field strength. 11 Grade 10 Physics EOT Term 2 Example Questions FRQ 2 A straight wire is part of a circuit that has a resistance (R) of 0.50 Ω. The wire is 0.20 m long and moves at a constant speed of 7.0 m/s perpendicular to a magnetic field of strength 8.0×10-2 T. a. What EMF is induced in the wire? b. What is the magnitude and direction of current through the wire? Show all calculations 12
