PRACTICE PAPER - 6

Draw a circuit diagram of the ring system of house wiring. What advantage does it have over the tree system?

In the circuit diagram, the voltmeter reading and ammeter reading are $4.0 \mathrm{V}$ and $0.4 \mathrm{A}$ respectively. Obtain:

(i)The value of the combined resistance of $40 \mathrm{\Omega }$ and $\mathrm{R} \mathrm{\Omega }$

(i) The value of $\mathrm{R}$

(ii) The current flowing through R

Draw a diagram for the magnetic field in a circular coil when current in the coil flows in clockwise direction.

Give the differences between electromagnet and permanent magnet.

Describe the working of a simple step-up transformer.

Draw a labelled diagram of a cathode ray tube.

In which position of coil (in degrees), the deflecting couple acting in D.C. motor is maximum?

Compare the properties of $\alpha$-particle and  $\gamma$-radiation.