Electricity — Science STD 10 — Question

How do you think the brightness of two lamps arranged in parallel compares with the brightness of two lamps arranged in series (both arrangements having one cell)?

What is common between the sun and a hydrogen bomb?

What is the function of a galvanometer in a circuit?

What is the nature of the image formed by a convex lens if the magnification produced by the lens is, -0.5?

Explain why, filament type electric bulbs are not power efficient.

If 20C of charge pass a point in a circuit in 1s, what current is flowing?

What is the name of:
The light-sensitive layer in the eye?

State the relation between work, charge and potential difference for an electric circuit.

Which type of lenses are:

1. Thinner in the middle than at the edges?
2. Thicker in the middle than at the edges?

Name the quantity whose unit is (i) kilowatt, and(ii) kilowatt-hour.