wayground logo

Free Printable Worksheets

NEW

Font size

S
M
L
XL
Worksheets

Magnetism & Magnetic effect of electric current

Total questions: 20

Worksheet time: 15mins

Name
Class
Date
1.

Hans Christan Oersted, one of leading scientist of 19th century played a crucial role in understanding _________

a)

Electric current

b)

Magnetism

c)

Electromagnetism

d)

Electricmagnetism

2.

What is full form of MRI?

a)

Magnetic Radiology Imaging

b)

Magneto Ray Idometry

c)

Medical Radiometer Instrument

d)

Magnetic Resonance Imaging

3.

Magnetic field produced around a straight conductor due to current in it is given by

a)

Fleming's right hand rule

b)

Right hand thumb rule

c)

Clock rule

d)

Fleming's left hand rule

4.

Magnetic field inside a long solenoid carrying current is

a)

same at all points (uniform)

b)

different at poles and at the centre

c)

zero

d)

different at all points

5.

A soft iron bar is inserted inside a current-carrying solenoid. The magnetic field inside the solenoid will

a)

Increase

b)

Decrease

c)

Remains same

d)

Becomes zero

6.

The magnetic field lines near a long straight wire carrying current are:

a)

Straight lines

b)

Concentric rings

c)

Spiral lines

d)

Radial lines

7.

According to right hand thumb rule the direction of magnetic field in a current carrying straight conductor is denoted by:

a)

Thumb

b)

Curl fingers

c)

Middle finger

d)

First finger

8.

Which of the following does not influence the strentgh of electromagnet?

a)

Number of turns of wire

b)

Magnitude of current flow in the wire

c)

Type of core

d)

Material used for insulator of the wire

9.

10. The SI unit of magnetic field is _________

a)

newton

b)

coulomb

c)

Tesla

d)

Watt

10.

8. The word magnetism was derived from iron ore __________

a)

hematite

b)

magnetite

c)

Cupric

d)

all the above

11.

Inside the magnet, the direction of field lines is from its

a)

north to south

b)

south to north

c)

mag. field do not move inside a magnet.

d)

none

12.

Is magnetic field a scalar quantity or vector quantity?

a)

scalar

b)

vector

c)

both

d)

none

13.

What creates a magnetic field?

a)

charged particles that do not move

b)

moving electric charges

c)

gravity

d)

an isolated magnetic pole

14.

If you break a bar magnet in half, each half...

a)

contains one magnetic pole.

b)

becomes a bar magnet with two poles.

c)

becomes unmagnetized.

d)

is only temporarily magnetized.

15.

Which of these is not a magnetic material?

a)

aluminium

b)

steel

c)

nickel

d)

iron

16.

What does a voltmeter measure?

a)

Current

b)

Voltage

c)

Resistance

17.

How does an ammeter is added in the circuit?

a)

Series

b)

Parallel

18.

An ammeter must have

a)

Low resistance so that it does affect the current through the main circuit

b)

High resistance so that it does affect the current through the main circuit

c)

Low resistance so that it does affect the voltage across the resistor

19.

frequency of revolution of particle in cyclotron

a)

qB2πm\frac{qB}{2\pi m}

b)

qm2πB\frac{qm}{2\pi B}

c)

mv2r\frac{mv^2}{r}

d)

mBr\frac{m}{Br}

20.

A cyclotron cannot accelerate

a)

proton

b)

deutron

c)

neutron

d)

alpha particles