Advertisements
Advertisements
Question
Advertisements
Solution
Power-voltage rating of an electrical appliance indicates the value of voltage above which the appliance should not be used. It serves as a precaution to the customer and also helps to calculate the maximum value of current that can be safely passed through the appliance.
APPEARS IN
RELATED QUESTIONS
The atoms of copper contain electrons and the atoms of rubber also contain electrons. Then why does copper conduct electricity but rubber does not conduct electricity?
By what name is the physical quantity coulomb/second called?
State the factors on which the strength of electric current flowing in a given conductor depends.
Name two devices which work on the heating effect of electric current.
Tick(✓) the correct choice in the following:
The outer casing of an electric iron is generally connected to earth in order
to
A bulb is connected to a battery of p.d. 4 V and internal resistance 2.5 Ω . A steady current of 0.5 A flows through the circuit. Calculate:
The total energy supplied by the battery in 10 minutes
A battery of e.m.f. 15 V and internal resistance 2 Ω is connected to two resistors of resistances 4 ohm and 6 ohm joined (a) in series. Find in each case the electrical energy spent per minute in 6 Ω resistor.
State whether the following statement is True or False:
The SI unit of charge is the coulomb.
Conventionally, the direction of the current is taken as:
What are the effects of electric current?
