Free Printable Electricity

Worksheets

Electricity

Total questions: 28

Worksheet time: 2hrs 20mins

Name

Class

Date

Thicker wires have _______ resistance than thinner wires.

less

the same

Electric current is measured in ______.

Watts

Volts

Amperes

As the resistance in a circuit increases, the electric current __________.

increases

decreases

stays the same

Which formulas represents Ohm's law?

V=IR

R=IV

I=RV

Which subatomic particles have a positive charge?

neutrons

electrons

protons

An accumulation of electrons on an object is known as ___________.

current

static electricity

What is the unit for resistance?

Volts

Amperes

Ohms

How many volts are in a circuit with a battery that has a resistance of 10 Ohms and a current of 2 Amps?

.5 Volts

5 Volts

20 Volts

Electricity is the flow of _________.

protons

neutrons

electrons

10.

What type of circuit is pictured?

series

parallel

11.

Which type of current comes from a battery?

alternating current (AC)

direct current (DC)

12.

A pupil measures the potential difference across a device and the current in it.

Which calculation gives the resistance of the device?

current + potential difference

current ÷ potential difference

potential difference ÷ current

potential difference × current

13.

RESISTANCE OF A CONDUCTOR DEPENDS

LENGTH

AREA

TEMPRATURE

ALL ABOVE

14.

What is a closed path for electrons to flow through?

static electricity

circuit

amperes

15.

A material in which electrons are able to move easily is called

Insulators

Conductors

16.

Which of the following correctly states relationship between voltage, resistance, and current in a circuit?

Current is directly related to voltage but inversely related to resistance.

Current is directly related to both voltage and resistance.

Current is inversely related to both voltage and resistance.

Current is directly related to voltage but is not affected by resistance.

17.

What will happen if one light bulb is removed from this circuit?

The other bulbs will go out.

The other bulbs will stay on

The other bulbs will get dimmer.

The battery will become stronger.

18.

In a closed circuit, how does battery voltage affect current?

As voltage increases, current increases.

As voltage increases, current decreases.

Voltage has no affect on current.

If voltage exceeds current, a short circuit circuit will develop.

19.

If the length of a wire increases, the resistance ____________

a. decreases

b. increases

c. stays the same

d. unknown

20.

Why is electricity transmitted in high voltages?

less dangerous to humans.

less prone to fire in transmission cables.

to power more appliances.

to reduce energy loss.

21.

The tendency for a material to oppose the flow of electrons, changing electrical energy into thermal energy and light.

Voltage

Current

Resistance

Circuit

22.

A battery of 10 volt carries 20,000 C of charge through a resistance of 20 Ω. The work done in 10 seconds is

2 x 10^{3 joule}

2 x 10^{5 joule}

2 x 10⁴ joule

2 x 10^{2 joule}

23.

Calculate the current flows through the 10 Ω resistor in the following circuit.

1.2 A

0.6 A

0.2 A

2.0 A

24.

Two resistors are connected in series gives an equivalent resistance of 10 Ω. When connected in parallel, gives 2.4 Ω. Then the individual resistance are

each of 5 Ω

6 Ω and 4 Ω

7 Ω and 4 Ω

8 Ω and 2 Ω

25.

A cell, a resistor, a key, and an ammeter are arranged as shown in the circuit diagrams. The current recorded in the ammeter will be

maximum in (i)

maximum in (ii)

maximum in (iii)

same in all the cases

26.

A student carries out an experiment and plots the V-I graph of three samples of nichrome wire with resistances R1 R2 and R3 respectively. Which of the following is true?

R1 = R2 = R3

R1 > R2 > R3

R3 > R2 > R1

R2 > R3 > R1

27.

Which of the following is not correctly matched?(

(a)

(b)

(c)

28.

The SI unit of resistivity is ……… .

Ohm

Ohm-metre

Ohm-cm

Ohm-joule

Reset

Electricity

Total questions: 28

Worksheet time: 2hrs 20mins

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