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

The electrical appliances in a house are connected in ______.

The rating of a fuse connected in the lighting circuit is:
(a) 15 A (b) 5 A (c) 10 A (d) Zero

A switch must be connected in:
(a) Live wire (b) neutral wire
(c) earth wire (d) either earth or neutral wire

Describe an experiment to demonstrate that there is a magnetic field around a current carrying conductor.

Find the potential difference required to pass a current of 0.2 A in a wire of resistance 20Ω

What will happen to a compass needle when the compass is placed below a wire with needle parallel to it and a current is made to flow through the wire? Give a reason to justify your answer.

A given wire of resistance 1 Ω is stretched to double its length. What will be its new resistance?

When current flows in a wire, it creates ______.

State two differences between the e.m.f and terminal voltage of a cell. 

The present of magnetic field at a point can be detected by ______.

By reversing the direction of current in a wire, the magnetic field produced by it:

A wire of uniform thickness with a resistance of 27Ω is cut into three equal pieces and they are joined in parallel. Find the equivalent resistance of the parallel combination. 

Calculate the effective resistance between the points A and B in the network shown below in Figure 8.45   

Calculate the equivalent resistance between A and B in the adjacent diagram.

In the network shown in the following adjacent Figure, calculate the equivalent resistance between the points.  

1. A and B
2. A and C

Two resistors of 2.0 Ω and 3.0 Ω are connected (a) in series (b) in parallel, with a battery of 6.0 V and negligible internal resistance. For each case draw a circuit diagram and calculate the current through the battery. 

A wire of length 5 m has a resistance of 2.0 Ω calculate:
(a) the resistance of wire of length 1 m
(b) the equivalent resistance if two such wires each of length 2 m are joined in parallel.
(c) the resistance of 1 m length of wire of same material but of half diameter. 

A cell supplies a current of 1.2 A through two 2 Ω resistors connected in parallel. When the resistors are connected in series, it supplies a current of 0.4 A. Calculate:

(i) the internal resistance and (ii) e.m.f. of the cell. 

The following circuit diagram shows three resistors 2 Ω, 4 Ω and R Ω connected to a battery of e.m.f 2V and internal resistance 3 Ω. If the main current of 0.25 A flows through the circuit, find:

1. the p.d. across the 4 Ω resistors,
2. the p.d. across the internal resistance of the cell,
3. the p.d. across the R Ω or 2 Ω resistors, and
4. the value of R.

Three resistors of 6.0 𝛀, 2.0𝛀 and 4.0𝛀 are joined to an ammeter A and a cell of e.m.f. 6.0 V as
shown in fig 8.52 Calculate:
(a) the effective resistance of the circuit and
(b) the reading of ammeter.