Advertisements
Advertisements
Question
State the factors on which the strength of electric current flowing in a given conductor depends.
Advertisements
Solution
The strength of the electric current flowing in a given conductor depends on two factors:
1) The potential difference across the ends of the conductor
2) The resistance of the conductor
APPEARS IN
RELATED QUESTIONS
Fill in the blank:
To increase the effective resistance in a circuit the resistors are connected in _____________.
Which particles constitute the electric current in a metallic conductor?
What is an electric current?
Which unit could be used to measure current?
(a) Watt
(b) Coulomb
(c) Volt
(d) Ampere
What happens to the other bulbs in a series circuit if one bulb blows off?
Which type of circuit, series or parallel, is preferred while connecting a large number of bulbs:
(a) for decorating a hotel building from outside?
Christmas tree lamps are usually wired in series. What happens if one lamps breaks?
Two resistors of 2.0 Ω and 3.0 Ω are connected (a) in series (b) in parallel, with a battery of 6.0 V and negligible internal resistance. For each case draw a circuit diagram and calculate the current through the battery.
The work done in moving unit positive charge across two points in an electric circuit is a measure of
Complete the following sentence:
Fuse wire has a ............ Melting point and it is made of an alloy of ......... and if the current in a circuit rises too high, the fuse wire ...........
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.
A current of 0.2 A flows through a wire whose ends are at a potential difference of 15 V. Calculate:
(i) The resistance of the wire, and
(ii) The heat energy produced in 1 minute.
What should I choose ___________________
b. for getting protection from electric current.
c. to measure the current in the circuit?
In electrolytes, the ions carrying charge move toward:
A switch in an electric circuit is used to:
In the process of current flow through a conductor, the amount of charge passing per unit time gives:
