Electric current is a flow of electric charge through a medium is measured as the rate of charge flow past a given point in an electric circuit, measured in Coulombs/second which is named Amperes.  Electric current is measured using an ammeter.The standard abbreviations for the units of current  are 1 A = 1C/s. This charge is typically carried by moving electrons in a conductor such as wire. It can also be carried by ions in an electrolyte, or by both ions and electrons in a plasma.

10 Quizzes on  Electric Current Objective Type Questions

 

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Who are the charge carriers in a conductor?

electrons
protons
neutrons
all of these

The bodies get charged when rubbed because of:

Electrical force
Electrostatic force
Mechanical force
Static Electricity

What is the direction of a conventional current in an electric circuit?

Positive to negative
Negative to positive
Both the above
It does not exist.

A current of 0.2A is flowing through a bulb for 5 minutes.Find the charge that is flowing through the conductor?

60C
70C
50C
80C

A current will not flow in the absence of?

Battery
Potential difference
Electric wire
All of these

The poorest conductor of electric charges is?

Gold
Copper
Silver
Lead

In an electrochemical cell,the oxidation takes place at?

Cathode
Anode
Both cathode and anode
In the electolyte

To increase the effective resistance in a circuit the resistors are connected in:

series
parallel
both ways
none of these

An electric bulb is connected to 250 Volt.The current passing through it is 0.27A. What is the power of the bulb?

87.5W
67.5W
58w
74W

Why is the fuse wire made of an alloy of low melting point?

To stop the flow of electric current at all.
To protect the user from getting an electric shock.
To stop the flow of any excess current.
All of these

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