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
The work done in moving a unit charge across two points in an electric circuit is a measure of:
(a) current
(b) potential difference
(c) resistance
(d) power
Fill in the folloing blank with suitable words:
Current is measured in ............... using an ............... placed in ............... in a circuit.
What Makes an Electric Current Flow in a Wire?
A flash of lighting carries 10 C of charge which flows for 0.01 s. What is the current? If the voltage is 10 MV, what is the energy?
An electric circuit consisting of a 0.5 m long nichrome wire XY, an ammeter, a voltmeter, four cells of 1.5 V each and a plug key was set up.
Following graph was plotted between V and I values:
What would be the values of `V/I` rations when the potential difference is 0.8 V, 1.2 V and 1.6 V respectively?
What conclusion do you draw from these values?
What is the resistance of the wire?
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
Consider the circuit given below:
(a) In which circuit are the lamps dimmest?
(b) In which circuit or circuits are the lamps of equal brightness to the lamps in circuit (i)?
(c) Which circuit gives out the maximum light?
How does the heat H produced by a current passing through a fixed resistance wire depend on magnitude of current I?
A switch must be connected in:
(a) Live wire (b) neutral wire
(c) earth wire (d) either earth or neutral wire
Complete the following sentence:
A fuse is connected in ........... with the ......... wire.
State the S.I. units of electrical power.
A bulb of 40 W is used for 12.5 h each day for 30 days. Calculate the electrical energy consumed.
What is meant by internal resistance of a cell?
An electrical gadget can give an electric shock to its user under certain circumstances. Mention any two of these circumstances.
Match the items in column-I to the items in column-II:
| Column - I | Column - II | ||
| (i) | electric current | (a) | volt |
| (ii) | potential difference | (b) | ohm meter |
| (iii) | specific resistance | (c) | watt |
| (iv) | electrical power | (d) | joule |
| (v) | electrical energy | (e) | ampere |
Name any two devices, which are working on the heating effect of the electric current.
Unit of electric power may also be expressed as
The number of electrons constituting a 1-coulomb charge is ______.
