Physics-
General
Easy

Question

When a current flows in a wire, there exists an electric field in the direction of :

  1. flow of current    
  2. opposite to the flow of current    
  3. perpendicular to the flow of current    
  4. at an angle of 45degree to the flow of current    

The correct answer is: flow of current

Related Questions to study

General
physics-

When the key K is pressed at time t = 0, then which of the following statements about the current I in the resistor AB of the given circuit is true ?

When the key K is pressed at time t = 0, then which of the following statements about the current I in the resistor AB of the given circuit is true ?

physics-General
General
physics-

In the following figure, current through 3 capital omega resistor is 0.8 amp; then the potential drop through 4 capital omega resistor is :

In the following figure, current through 3 capital omega resistor is 0.8 amp; then the potential drop through 4 capital omega resistor is :

physics-General
General
physics-

In the figure shown below the e.m.f. of the cell is 2V and internal resistance is negligible. The resistance of the voltmeter is 80 ohm. The reading of voltmeter will be :

In the figure shown below the e.m.f. of the cell is 2V and internal resistance is negligible. The resistance of the voltmeter is 80 ohm. The reading of voltmeter will be :

physics-General
parallel
General
physics-

In the circuit shown in the following figure, the potential difference between points A and B will be:

In the circuit shown in the following figure, the potential difference between points A and B will be:

physics-General
General
physics-

There is no current in a 2 capital omega resistance, then the equivalent resistance of the given circuit is :

There is no current in a 2 capital omega resistance, then the equivalent resistance of the given circuit is :

physics-General
General
physics-

A cell when balanced with potentiometer gave a balance length of 50 cm. Then a 4.5 capital omega external resistance is introduced in the circuit. Now it is balanced on 45 cm. The internal resistance of the cell is :

A cell when balanced with potentiometer gave a balance length of 50 cm. Then a 4.5 capital omega external resistance is introduced in the circuit. Now it is balanced on 45 cm. The internal resistance of the cell is :

physics-General
parallel
General
physics-

Five resistances have been connected as shown in the figure. The effective resistance between the points A and B is :

Five resistances have been connected as shown in the figure. The effective resistance between the points A and B is :

physics-General
General
physics-

In the following figure, the resistance of the galvanometer G is 50 ohm. Of the following alternatives in which case are the currents arranged strictly in the order of decreasing magnitudes with the larger coming earlier :

In the following figure, the resistance of the galvanometer G is 50 ohm. Of the following alternatives in which case are the currents arranged strictly in the order of decreasing magnitudes with the larger coming earlier :

physics-General
General
physics-

Eels are able to generate current with biological cells called electroplaques The electroplaques in an eel are arranged in 100 rows, each row stretching horizontally along the body of fish containing 5000 electroplaques The arrangement is suggestively shown in the figure Each electroplaque has an e.m.f. of 0.15 V and internal resistance of 0.25 W. The water surrounding the eel completes a circuit between the head and its tail. If the water surrounding it has a resistance of 500W, the current an eel can produce in water is about :

Eels are able to generate current with biological cells called electroplaques The electroplaques in an eel are arranged in 100 rows, each row stretching horizontally along the body of fish containing 5000 electroplaques The arrangement is suggestively shown in the figure Each electroplaque has an e.m.f. of 0.15 V and internal resistance of 0.25 W. The water surrounding the eel completes a circuit between the head and its tail. If the water surrounding it has a resistance of 500W, the current an eel can produce in water is about :

physics-General
parallel
General
physics-

The value of current I in the given circuit is :

The value of current I in the given circuit is :

physics-General
General
physics-

Twelve equal resistors, each of resistance R, are connected to form a skeleton cube. Then the equivalent resistance taken between two diagonally opposite corners is :

Twelve equal resistors, each of resistance R, are connected to form a skeleton cube. Then the equivalent resistance taken between two diagonally opposite corners is :

physics-General
General
physics-

Five identical lamps, each of resistance 1100 ohm are connected to 220 volt as shown in figure in the following figure. The reading of an ideal ammeter A is :

Five identical lamps, each of resistance 1100 ohm are connected to 220 volt as shown in figure in the following figure. The reading of an ideal ammeter A is :

physics-General
parallel
General
physics-

In the following figure, the reading of an ideal voltmeter V is zero. Then the relation between R, r1 and r2 is :

In the following figure, the reading of an ideal voltmeter V is zero. Then the relation between R, r1 and r2 is :

physics-General
General
physics-

The e.m.f. of the daniel cell is :

The e.m.f. of the daniel cell is :

physics-General
General
physics-

In the circuit, the galvanometer G shows zero deflection. If the batteries A and B have negligible internal resistance, the value of the resistor R will be :

In the circuit, the galvanometer G shows zero deflection. If the batteries A and B have negligible internal resistance, the value of the resistor R will be :

physics-General
parallel

card img

With Turito Academy.

card img

With Turito Foundation.

card img

Get an Expert Advice From Turito.

Turito Academy

card img

With Turito Academy.

Test Prep

card img

With Turito Foundation.