Advertisements
Advertisements
प्रश्न
A Radio Set Draws a Current of 0.36 a for 15 Minutes. Calculate the Amount of Electric Charge that Flows Through the Circuit.
Advertisements
उत्तर
Given:
Current, I = 0.36 A
Time, t = 15 minutes = `(15xx60)` s = 900 s
Using the formula, `I=Q/t:`
or `Q=Ixxt=0.36xx900=324C`
Thus, the amount of electric charge that flows through the circuit is 324 C.
APPEARS IN
संबंधित प्रश्न
By what name is the physical quantity coulomb/second called?
What actually travels through the wires when you switch on a light?
If the amount of electric charge passing through a conductor in 10 minutes is 300 C, the current flowing is:
(a) 30 A
(b) 0.3 A
(c) 0.5 A
(d) 5 A
Three resistors are connected as shown in the diagram.
Through the resistor 5 ohm, a current of 1 ampere is flowing.
(i) What is the current through the other two resistors?
(ii) What is the p.d. across AB and across AC?
(iii) What is the total resistance
Give three reasons why different electrical appliances in a domestic circuit are connected in parallel.
State two differences between the e.m.f. and terminal voltage of a cell.
Complete the following sentence:
A fuse is connected in ........... with the ......... wire.
What is international convention of colour coding in a cable?
Explain with the help of a diagram how does 'short circuiting' occur in an electric kettle.
Electrical appliances have voltage and power ratings as listed below. Which
has the larger working resistance?
| Appliances | Voltage (V) | Power (W) |
| (a) Washing machine | 250 | 3000 |
| ( b) Television | 240 | 160 |
| (c)240 | 240 | 1500 |
| ( d) Hair curler | 250 | 20 |
| ( e) Car head lamp | 12 | 36 |
A bulb marked 12 V, 24 W operates on a 12 V battery for 20 minutes. Calculate:
- The current flowing through it, and
- The energy consumed.
State the condition when it is advantageous to connect cells in parallel.
Kilowatt hour is the unit of
Assertion (A): Electric current will not flow between two charged bodies when connected if their charges are the same.
Reason (R): Current is the rate of flow of charge.
The electron was discovered in 1897 by:
