Advertisements
Advertisements
प्रश्न
A fuse is a short piece of wire of high ______ and low ______.
Advertisements
उत्तर
A fuse is a short piece of wire of high resistance and low melting point.
संबंधित प्रश्न
A car headlight bulb working on a 12 V car battery draws a current of 0.5 A. The resistance of the light bulb is:
Name two devices which work on the heating effect of electric current.
Two resistors P and Q of the same material and length but of different thickness are connected in parallel to a battery. The cross- sectional area of P is twice that of Q. What is the ratio of
(a) The resistance of P to the resistance of Q?
(b) The current in P to the current in Q?
Fig. shows a 3 pin plug with the cover removed. The electric cable
connected to the plug contains 3 wires with colour coded insulation namely brown, blue and green.
- Identify each of the colour coded wires by stating to which of the
terminals A, B or C in the diagram they should be connected. - Identify the terminal through which no current passes in normal
circumstances. - What is the purpose of the earthed wire connected to an electric
appliance like an electric heater? Describe how it works.
Problems for practice:
If 5A current flows through a circuit, then convert the current in terms of microampere?
Electric current passes through a metallic conductor due to the movement of ______.
Conventional current is defined as the direction in which which type of charge would flow?
In ionised gases (plasma), the charge carriers are:
