Advertisements
Advertisements
Question
State the S.I. unit of current.
Advertisements
Solution
S.I. unit of current is ampere (A).
APPEARS IN
RELATED QUESTIONS
One coulomb charge is equivalent to the charge contained in:
(a) 2.6 × 1019 electrons
(b) 6.2 × 1019 electrons
(c) 2.65 × 1018 electrons
(d) 6.25 × 1018 electrons
What happens to the other bulbs in a series circuit if one bulb blows off?
Ten bulbs are connected in a series circuit to a power supply line. Ten identical bulbs are connected in a parallel circuit to an identical power supply line.
(d) Which circuit would have less current in it?
Draw a circuit diagram showing two lamps, one cell and a switch connected in series.
How can you change the brightness of the lamp?
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.
An electric bulb is rated at 220 V, 100 W.
- What is its resistance?
- What safe current can be passed through it?
A bulb of 40 W is used for 12.5 h each day for 30 days. Calculate the electrical energy consumed.
What determines the direction of flow of electrons between two charged conductors kept in contact?
Unit of electric power may also be expressed as
