GCSEPhysEMInduction13

Question 1

The size and direction of direct current (d.c) are both …?

Answer 1

constant

Question 2

The size and direction of alternating current (a.c) both continually…?

Answer 2

change

Question 3

Turns-ratio equation for a transformer

Answer 3

V_s/V_p = n_s/n_p

Question 4

Power equation for a transformer

Answer 4

V_pI_p = V_sI_s

Question 5

If a conductor and/or magnet is moved so that the conductor cuts across magnetic field lines, then …?… …?… is induced in the conductor

Answer 5

electric current

Question 6

If the current flowing through a coil is changed, then electric current is …?… in a nearby second coil.

Answer 6

induced

Question 7

Step-up and step-down transformers help to …?… power losses in power lines.

Answer 7

reduce

Question 8

The current induced using a magnet can be increased by using a …?… magnet

Answer 8

stronger

Question 9

If the conductor and/or magnet is moved more quickly, then the current induced in the conductor …?

Answer 9

increases

Question 10

If the direction of motion of the moving magnet or conductor is reversed then the induced current …?

Answer 10

reverses