Explore topic-wise MCQs in Engineering.

An inductor, a 1 k resistor, and a switch are connected in series across a 6 V battery. At the instant the switch is closed, the inductor voltage is

A sine wave voltage is applied across an inductor. When the frequency of the voltage is decreased, the current

An ohmmeter is connected across an inductor and the pointer indicates zero ohms. The inductor is

A 240 H inductor is equivalent to a

A 2 mH, a 3.3 mH, and a 0.2 mH inductor are connected in series. The total inductance is

A 5 mH, a 4.3 mH, and a 0.6 mH inductor are connected in parallel. The total inductance is

The voltage across a coil when di/dt = 20 mA/s and L = 8 H is

A series circuit has a 24 V source and a total resistance of 120 . The current through each resistor is

To measure the current out of the second resistor in a circuit consisting of four resistors, an ammeter can be placed

A 12 V battery is connected across a series combination of 68 , 47 , 220 , and 33 . The amount of current is

A 12 k resistor, a 15 k resistor, and a 22 k resistor are in series with two 10 k resistors that are in parallel. The source voltage is 75 V. Current through the 15 k resistor is approximately

A 6 V battery output is divided down to obtain two output voltages. Three 2.2 k resistors are used to provide the two taps. The two output voltages are

Two 3.3 k resistors are in series and this series combination is in parallel with a 4.7 k resistor. The voltage across one of the 3.3 k resistors is 12 V. The voltage across the 4.7 k resistor is

Three 15 mH inductors are in series. The total inductance is

A switch, a 220 resistor, and a 60 mH inductor are in series across a 20 V battery. What is the current through the inductor two time constants after the switch is closed?

When the current through an inductor is cut in half, the amount of energy stored in the electromagnetic field

The inductance of an iron-core coil decreases if

When a load resistance is removed from the output of a voltage divider circuit, the current drawn from the source

The parallel combination of a 470 resistor and a 1.5 k resistor is in series with the parallel combination of five 1 k resistors. The source voltage is 50 V. The percentage of the load current through any single 1 k resistor is

On which of the following voltage range settings will a voltmeter present the minimum load on a circuit?

A voltage divider consists of two 100 k resistors and a 12 V source. What will the output voltage be if a load resistor of 1 M is connected to the output?

Three 680 resistors are connected in series with a 470 V source. Current in the circuit is

There are five resistors in a given series circuit and each resistor has 6 V dropped across it. The source voltage

Five resistors are connected in a series and there is a current of 3 A into the first resistor. The amount of current into the second resistor is

All the voltage drops and the source voltage added together in a series circuit is equal to

Two 1.5 V cells are connected series opposing across two 100 resistors in series. Total current flow is

Two 6 V batteries are connected series aiding across two 1.2 k resistors in series. Current through each resistor is

When one of three series resistors is removed from a circuit and the circuit is reconnected, the current

The total power in a certain circuit is 12 W. Each of the four equal-value series resistors making up the circuit dissipates

You are measuring the current in a circuit that is operated on an 18 V battery. The ammeter reads 40 mA. Later you notice the current has dropped to 20 mA. How much has the voltage changed?

If you wish to increase the amount of current in a resistor from 120 mA to 160 mA by changing the 24 V source, what should the new voltage setting be?

When there is 12 mA of current through a 1.2 k resistor, the voltage across the resistor is

A resistance of 3.3 M is connected across a 500 V source. The resulting current is approximately

What is the voltage source for a circuit carrying 2 A of current through a 36 resistor?

A voltage divider consists of two 68 k resistors and a 24 V source. The unknown output voltage is

Resistance is measured in

A string of five series resistors is connected across a 6 V battery. Zero voltage is measured across all resistors except R₃. The voltage across R₃ is

The formula to find I when the values of V and R are known is

Approximately how many milliamperes of current flow through a circuit with a 40 V source and 6.8 k of resistance?

Voltage is measured in

The number 0.0003 multiplied by 10^-3 is

Current is measured in

Which of the following is not an electrical quantity?

Seven thousand volts can be expressed as

The number 4.4 10⁶ ohms expressed using a metric prefix is

The number of microamperes in 2 milliamperes is

The number of millivolts in 0.06 kilovolts is

Eighteen thousand watts is the same as

The number 3.2 10 ⁵ A expressed using a metric prefix is

How much current is produced by a voltage of 18 kV across a 15 k resistance?