Mocks

Question 1

Force is a

Answer 1

Vector, it has a size and direction

Question 2

Work done

Answer 2

Wd = force x distance

Question 3

Power (wd) equation

Answer 3

P= work done
—————
Time

Question 4

Charge equation

Answer 4

Charge = current x time

Question 5

Energy transferred equation

Answer 5

Et =charge moved x potential difference

Question 6

Potential difference equation

Answer 6

Pd = current x resistance

Question 7

Energy equation

Answer 7

E = current x potential difference x time

Question 8

Power in circuits equation

Answer 8

P = energy transferred
—————————
Time

Question 9

Electrical power equation

Answer 9

Ep = current x potential difference

If don’t know potential difference, use p= current2 x resistance

Question 10

Transformers

Answer 10

Potential difference across primary coil x current through primary coil = potential difference across secondary coil x current through secondary coil

Question 11

Specific heat capacity

Answer 11

Change in thermal energy = mass x spc x temp

Question 12

Specific latent heat

Answer 12

Thermal energy = mass x slh

Question 13

Force equation

Answer 13

Force = spring constant x extension

Question 14

Elasticity

Answer 14

Energy transferred in stretching = 1/2 x spring constant x extension2

Question 15

Power equation

Answer 15

Power = current x voltage

Question 16

Energy equation

Answer 16

Energy = power x time