Two bulbs are connected in series ina circuit. If the filament of a bulb breaks then, .............

The magnetic field produced at the centre of circular coil is directly proportional to

Which of the following scientist invented the rule of electromagnetic induction?

....is a device which converts mechanical energy to electrical energy.

The divergence of magnetic field lines near the ends of a current carrying straight solenoid indicate that

The potential difference between live and neutral wires in domestic circuits is

Heat energy is being produced in a resistence in a circuit at the rate of 90 W. The current of 3 A is flowing in the circuit. What must be the value of the resistance?

If the compass is moved away from the current carrying conductor, ............

An electric iron of 1100 W is operated for 2 hrs daily. What will be the electrical consumption expenses for that in the month of April? (The electric company charges Rs 6 per unit of energy.)

In DC generator, a.......... is fixed on the axle.

..........occurs, when more appliances work together in a circuit.

,,,,,,,,,,,,,,,rule gives the direction of magnetic field when current flows through a straight. conducting wire

Electromagnetic induction means

The right hand thumb rule is also called rule

Which of the following is not equivalent to magnitude of 1 unit of energy?

Heating effect of electric current is not observed in ............ .

If the current flowing through a straight conductor is decreased, the intensity of the magnetic field

Choose the correct statement.

In the experiment to study the magnetic field due to electric current flowing through a coil, would be used to find direction of magnetic lines of force..

The electricity bill specifies the uage in .......... .

For a coil carrying current, the magnetic field is stronger .............. .

When electric current is passed through the solenoid, it shows magnetic lines of force similar to a............

In an electric bulb coil of............. metal is used.

Torch and motorcar engine work on,

If an electric conductor is moving in a magnetic field or the magnetic field around a stationary conductor is changing then

Heat in the resistor is created according to the rule of conservation of........... .

Which of the following device does not use electric motor?

When a copper wire with a resistive coating is wound in a chain of loops (like a spring), it is called as

The magnetic lines of force inside the solenoid are parallel to each other. This indicates that ......... .

Two tungsten bulbs of wattage 110 W and 55 W power work on 220 V potential, how much current will flow in the main conductor?

The displacement of the rod is .............. when the direction of the current through the rod is ............ to the direction of the magnetic field.

..............occurs, due to a fault in the equipment or if the plastic coating on the 'live' and the 'neutral' wires gives away the two wires come in contact with each other and a large current flows throught it producing heat.

An electric blub is connected to 200 volts. If the current of 0.5 A passes through it, what is the power of the bulb?

Which of the statement given below correctly describes the magnetic field near a long, straight current carrying conductor?

According to..........rule electric current is produced in electric generator.

A coil of an alloy ......................... is used in electric heater cooker as a resistor.

The unit of electrical power is .......... .

............. is used for detecting and measuring electric current.

When the coil of D.C. generator rotates in the magnetic field,.......... is produced in the coil.

.............. is a sensitive device which works on the principle that a current carrying conductor placed in a magnetic field experiences a force.

The induced current will be maximum when

Magnitude of the magnetic field produced at a given point is directly proportional to the magnitude of the

In magnet-coil experiment, if both the maghet and coil are stationary, there is deflection in the galvanometer.

............ is a device which converts electrical energy to mechanical energy.

If a current of 1 ampere is passed through a wire having resistance 10 Ω for 60 seconds, claculate the heat generated in the wire in joule.

Magnitude of the field produced by a current carrying wire at a given point is

These days when current in the circuit suddenly increases......... switches are used.

......are used in AC electric generator.

Fuse is made of a substance with

In right hand thumb rule, a current carrying wire is held in right hand such that

In an electric motor, rectangular coil undergoes rotation because

Choose the incorrect statement.

............... works on the principle that a current carrying conductor placed in a magnetic field experiences a force.

How would the strength of magnetic field due to current carrying loop be affected if radius of the loop is reduced to half its original value?

In ............. appliance, Fleming's left hand rule is not used.

What is the frequency of direct current?