Electricity

Question 1

What is the unit for power?

Answer 1

Watt

Question 2

What is the unit for potential difference?

Answer 2

Volts

Question 3

SI unit for current(I)

Answer 3

Ampere

Question 4

SI unit for energy

Answer 4

Joules or kWh(kilowatts per hour)

Question 5

SI unit of electrical charge

Answer 5

C(coulomb)

Question 6

SI unit of work done

Answer 6

Joule

Question 7

I =?/T

Answer 7

I = Q/T

Question 8

How does current flow through in an conventional current?

Answer 8

Current moves from the positive terminal to the negative terminal of the battery.

Question 9

An ammeter must be connected in ? Of a circuit.

Answer 9

Series

Question 10

V=?/Q

Answer 10

V=W/Q

Question 11

E=W/?

Answer 11

Q(charge)

Question 12

The voltmeter must be connected in ? to the circuit component.

Answer 12

Parallel

Question 13

R=V/?

Answer 13

I

Question 14

SI unit of resistance is

Answer 14

Ohm

Question 15

What are the two factors that will increase/decrease the resistance?

Answer 15

1)The longer the cross-sectional area, the smaller the resistance.
2)The longer the wire, the greater the resistance.
(More current-Less resistance)

Question 16

Function of variable resistors

Answer 16

Used to vary the size of current in circuit

Question 17

P=?I

Answer 17

V

Question 18

E=?t

Answer 18

P

Question 19

How does current get calculated in a series circuit?

Answer 19

I1=I2=I3

Question 20

How does current flow through a parallel circuit?

Answer 20

I=I1+I2

Question 21

How do you calculate the potential difference in a series circuit?

Answer 21

V=V1+V2+V3

Question 22

How do you calculate the potential difference in a parallel circuit?

Answer 22

E=V1=V2

Question 23

How do you calculate the resistance in a series circuit?

Answer 23

R=R1+R2

Question 24

How do you calculate the resistance in a parallel circuit?

Answer 24

1/R=1/R1+1/R2+1/R3