Electric Circuits Answers

The circuit shows a battery and 4 lamps. All lamps are lit. One lamp fails and all the lamps go out. Which lamp failed?

3. (a) Find the equivalent resistance of the circuit below with respect to point a and b.
(b) A battery of voltage ℇ = 8 V is connected in the circuit so that the point � to be the positive terminal of the battery and the point � the negative terminal. Calculate the current the battery produces to the circuit.

In what time would a current of 3A transfer a charge of 30C?

twenty seven drops of same sizes are charged at 220V each. They coalesce to form a bigger drop. Calculate the potential of the bigger drop.

In case of a receiver explain the following terms with the help of graphs: (i) sensitivity, (ii) half power point, (iii) linearity and (iv) fidelity. What should be their ideal behaviour/value?

State with reasons whether the following statements are True or False.
i) Assembly language programmes are portable.
ii) Same web browser can be used to access Internet as well as Intranet network.

Draw the circuit representing a practical transmission line in terms of lumped
components. What are the values of R and G in case of ideal transmission line?
Why?

A computer key board has 108 keys. Assuming equal probability of any key pressing
calculate the information content, I, carried by each key. Prove that this information
is more than the information carried by a key on the number pad of a touch tone
telephone. [Hint: Touch phone has 16 keys on its pad]

describe how the equipment can be used to find the power of another battery charger

Two point charges +4q and +q are separated by distance r, where should a third point charge Q be placed so that the whole system remains in equilibrium?