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

You have three resistors of values 2Ω, 3Ω and 5Ω. How will you join them so that the total resistance is less than 1Ω? Draw diagram and find the total resistance. 

Calculate the equivalent resistance between the points A and B in Fig. if each resistance is 2·0 Ω.

A combination consists of three resistors in series. Four similar sets are connected in parallel. If the resistance of each resistor is 2 ohm, find the resistance of the combination. 

Name the type of energy (kinetic energy K or potential energy U) possessed in the following case:

A piece of stone placed on the roof.

Five resistors, each 3 Ω, are connected as shown in Fig. Calculate the resistance

1. between the points P and Q.
2. between the points X and Y.  

State different forms of potential energy and give one example of each.

The current induced in a closed circuit only if there is ______.

Write an expression for the potential energy of a body of mass m placed at a height h above the earth's surface. State the assumptions made, if any.

Name the form of energy which a body may possess even when it is not in motion. Give an example to support your answer.

What do you understand by the kinetic energy of a body?

In the following figure calculate:

1. the total resistance of the circuit
2. the value of R, and
3. the current flowing in R.

A body of mass m is moving with a velocity v. Write the expression for its kinetic energy.

State the work energy theorem.

A particular resistance wire has a resistance of 3 ohm per meter. Find the total resistance of three lengths of this wire each 1.5 m long, joined in parallel.

A battery of e.m.f 16 V and internal resistance 2 Ω is connected to two resistors 3Ω and 6Ω connected in parallel. Find:

1. the current through the battery.
2. p.d. between the terminals of the battery,
3. the current in 3 Ω resistors,
4. the current in 6 Ω resistor. 

A light mass and a heavy mass have equal momentum. Which will have more kinetic energy?

(Hint : Kinetic energy K = P²/2m where P is the momentum.)

Differentiate between the potential energy (U) and the kinetic energy (K).

Name the form of mechanical energy, which is put to use.

Name six different forms of energy?

State the energy changes in the following case while in use:
an electric bulb