E&M Equations

Question 1

Electric Force Due to Point

Answer 1

Question 2

Flux

Answer 2

Question 3

Capacitors in Parallel

Answer 3

Question 4

Capacitors in Series

Answer 4

Question 5

Resistors in Parallel

Answer 5

Question 6

Resistors In Series

Answer 6

Question 7

Parallel Plate Capacitor

Answer 7

Question 8

Self-Induction

Answer 8

Question 9

Energy Stored in Inductor

Answer 9

Question 10

Amperes Law

Answer 10

Question 11

Magnetic Field in a Solenoid

Answer 11

B_s = µnI

Question 12

Potential Inside Conducting Sphere

Answer 12

Same as at the surface

Question 13

Work on point moving on equipotential line

Answer 13

No work is done in moving a charged object along a line or surface of equipotential.

Question 14

Capacitance from Graph

Answer 14

The slope of a charge-voltage graph for a capacitor is its capacitance.

Question 15

Work to charge a capacitor

Answer 15

Area under Charge-voltage graph

Question 16

Energy Stored in a capacitor

Answer 16

Work done to charge capacitor = area under charge-voltage graph

Question 17

Resistance of object

Answer 17

R = ρL/A

Question 18

Work done by magnetic field

Answer 18

Magnetic fields don’t do work on charged particles moving through the field because the force is always perpendicular to the velocity.