(English Medium) ICSE Class 10 - CISCE Question Bank Solutions

For the following scenario, state whether the work done by gravity is positive, negative, or zero.

A car in neutral gear is coming down the slope.

Observe the given circuit diagram and answer the questions that follow:

1. Calculate the resistance of the circuit when the key K completes the circuit.
2. Calculate the current through 3Ω resistance when the circuit is complete.

A man raises a box of mass 50 kg to a height of 2 m in 20 s, while another man raises the same box to the same height in 50 s. Compare:

1. the work done, and
2. the power developed by them. Take g = 10 N kg^-1

A boy weighing 50 kgf climbs up from the first floor at a height of 3 m above the ground to the third floor at a height of 9 m above the ground. What will be the increase in his gravitational potential energy? (Take g = 10 N kg^-1).

Name two electromagnetic waves of wavelength smaller than that of violet light.

Define the term resistance.

Two copper wires are of the same length, but one is thicker than the other. Which wire will have more specific resistance?

Name the material of fuse. State one characteristic of the material used for fuse.

State the purpose of using a fuse in a circuit.

How does the length of a fuse wire depend on its current rating?

Two fuse wires are rated 5 A and 20 A. Which of the two is longer ?

'A fuse is rated 8 A'. Can it be used with an electrical appliance of rating 5 kW, 200 V?

Name two safety devices which are connected to the live wire of a household electric circuit.

Why is it not advisable to use a piece of copper wire as fuse wire in an electric circuit?

Give one example of static equilibrium.

Give one example of dynamic equilibrium.

Which class of lever will always have MA > 1 and why?

Rajan exerts a force of 150 N in pulling a cart at a constant speed of 10 m/s^-1. Calculate the power exerted.

Why does a current carrying, freely suspended solenoid rest along a particular direction?

State the direction in which current-carrying freely suspended solenoid rests