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The following physics revision questions are provided in support of the physics tutorial on Maxwell Equations. In addition to this tutorial, we also provide revision notes, a video tutorial, revision questions on this page (which allow you to check your understanding of the topic) and calculators which provide full, step by step calculations for each of the formula in the Maxwell Equations tutorials. The Maxwell Equations calculators are particularly useful for ensuring your step-by-step calculations are correct as well as ensuring your final result is accurate.

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Tutorial ID | Title | Tutorial | Video Tutorial | Revision Notes | Revision Questions | |
---|---|---|---|---|---|---|

16.18 | Maxwell Equations |

**1)** A circular-plate capacitor of plate radius R is being charged as shown in the figure below.

What is the magnitude of magnetic field at 4 cm from the centre of plates if the diameter of each plate is 10 cm and ** dE/dt** = 5 × 10

Take ε0 = 8.85 × 10^{12} ** C^{2}/(N·m^{2})** and μ

- 2.22 μT
- 1.11 μT
- 5.55 μT
- 1.33 μT

**Correct Answer: B**

**2)** A parallel-plate capacitor of circular plates is being charged at constant current. The capacitor plates are circular and the radius of each plate is 2 cm. What is the rate of electric field change between the plates if the maximum magnetic field produced during this process is B_{max} = 8 μT?

Take ε0 = 8.85 × 10^{-12} ** C^{2}/(N·m^{2})** and μ

- 7.2 × 10
^{13}V/(m·s) - 7.2 × 10
^{12}V/(m·s) - 8 × 10
^{15}V/(m·s) - 8 × 10
^{12}V/(m·s)

**Correct Answer: A**

**3)** A parallel plate capacitor of circular plates the area of which is 30 mm_{2} each, is being charged by a constant current I = 2 A. What is the magnetic field induced at 5 mm from the centre of plates?

Take μ_{0} = 4π × 10^{-7} N/A^{2}.

- 8 × 10
^{-4}T - 7.2 × 10
^{-4}T - 2 × 10
^{-4}T - 4 × 10
^{-4}T

**Correct Answer: D**

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