Physics
(a) The given figure shows three resistors. Find the combined resistance.
(b) Which part of an electrical appliance is earthed?
Related Questions
Of the three connecting wires in a household circuit:
(a) Which two of the three wires are at the same potential?
(b) In which of the three wires should the switch be connected?
A lens forms an erect, magnified and virtual image of an object. Name the lens used and draw a labelled ray diagram to show the image formation.
The diagram below shows a coil connected to the centre zero galvanometer.
What polarity is induced at point X when
(a) the magnet is moved towards the coil
(b) the magnet is moved away from the coil?
Some common salt is added to ice. It is found that temperature of mixture drops below 0°C. Explain the fact and where is this used?