Quiz 09 – APS Physics

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Passing percentage = 60%

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Magnetism

1 / 10

Two magnetic field lines:

Intersect at neutral point

Intersect at the midpoint of the magnet

Never intersect each other

Intersect near north-pole or south pole

2 / 10

Short-circuit is a condition when

neutral wire comes in contact with earth wire

live wire comes in contact with the neutral wire without any load in between

earth wire comes in contact with metallic part of the appliance

length of the connecting wires is reduced to make the circuit looks smaller i.e. short

3 / 10

A fuse is rated at 8 A, it means :

It will not work if current is less than 8 A.

It will work only if current is 8 A.

It has a resistance of 8 ohm.

It will burn if current exceeds 8 A.

4 / 10

A stationary charged particle is placed in an external magnetic field. The force on the charge particle will be

maximum

zero

parallel to the magnetic field

perpendicular to the magnetic field

5 / 10

The magnetic field inside a long straight solenoid carrying current

is same at all points

increases as we move towards its end

decreases as we move towards its end

is zero

6 / 10

When a charged particle moves in a uniform magnetic field perpendicular to it, direction of magnetic force is given by which rule?

Flemings's right hand rule

Fleming's left hand rule

right hand thumb rule

left hand thumb rule

7 / 10

If the magnitude of electric current is constant and its flows in one direction only then such a current is known as

direct current

bad current

good current

alternating current

8 / 10

When an electron is moving upwards in a uniform magnetic field which is directed from left to right as shown in the figure, what will be the direction of force acting on this particle?

inwards

towards north

towards south

outwards

9 / 10

The main advantage of AC over DC is

Air Conditioners (AC) works only on alternating current (AC)

AC can be transmitted to long distances with zero power loss

AC can be transmitted to long distances with huge power loss

AC can be transmitted to long distances without much power loss

10 / 10

Two safety measures commonly used in domestic electric circuits are

Earth wire and electric meter

Live wire and neutral wire

Fuse and Earth wire

Earth wire and neutral wire

The average score is 83%

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