Physics

General

Easy

Question

# The current gain of a transistor is 100 . If the base current changes by 200 , What is the change in collector current?

- 20 mA
- 200 mA
- 2 mA
- 0.2 mA

## The correct answer is: 20 mA

### Related Questions to study

physics-

### A tank contains two different liquids which do not mix with each other as shown in figure. The lower and upper liquids are at depths and respectively. An object O is located at the bottom. When seen vertically from above, locate the position of image of O.

### A tank contains two different liquids which do not mix with each other as shown in figure. The lower and upper liquids are at depths and respectively. An object O is located at the bottom. When seen vertically from above, locate the position of image of O.

physics-General

physics-

### Two identical solid copper spheres of radius R are placed in contact with each other. The, gravitational force between them is proportional to

### Two identical solid copper spheres of radius R are placed in contact with each other. The, gravitational force between them is proportional to

physics-General

physics-

### A light ray is incident perpendicular to one face of 90° prism and is totally internally reflected at the glass-air interface. If the angle of reflection is 45° We conclude that the refractive index.....

### A light ray is incident perpendicular to one face of 90° prism and is totally internally reflected at the glass-air interface. If the angle of reflection is 45° We conclude that the refractive index.....

physics-General

physics-

### A ray falls on a prism ABC(AB=BC) and travels as shown in the figure. The minimum refractive, index of the prism material should be.

### A ray falls on a prism ABC(AB=BC) and travels as shown in the figure. The minimum refractive, index of the prism material should be.

physics-General

physics-

### Two parallel light rays are incident at one surface of a prism of refractive index 1.5 as shown in figure. What is the angle between the rays as they emerge ?

### Two parallel light rays are incident at one surface of a prism of refractive index 1.5 as shown in figure. What is the angle between the rays as they emerge ?

physics-General

Maths-

### is decreasing in

### is decreasing in

Maths-General

Maths-

### The interval of increase of the function is

For such questions, we should know different formulas of differentiation.

### The interval of increase of the function is

Maths-General

For such questions, we should know different formulas of differentiation.

physics-

### In experiment of the potentiometer wire of length 100 cm has a resistance of 10, It is connected in series with a resistance R and a cell of emf 2 volts and of negligible internal resistance. A Source of emf 10mV is balanced against a length of 40 cm of the potentiometer wire. What is the value of the external resistance?

### In experiment of the potentiometer wire of length 100 cm has a resistance of 10, It is connected in series with a resistance R and a cell of emf 2 volts and of negligible internal resistance. A Source of emf 10mV is balanced against a length of 40 cm of the potentiometer wire. What is the value of the external resistance?

physics-General

Maths-

### The function is

For such questions, we should check the rules of increasing and decreasing function.

### The function is

Maths-General

For such questions, we should check the rules of increasing and decreasing function.

maths-

### If the function is decreasing in its domain then

### If the function is decreasing in its domain then

maths-General

Maths-

### The function is

We have to see the rules for a increasing and decreasing function.

### The function is

Maths-General

We have to see the rules for a increasing and decreasing function.

maths-

### If then the maximum value of is

### If then the maximum value of is

maths-General

maths-

### The minimum value of the function where is

### The minimum value of the function where is

maths-General

physics-

### In the experiment of potentiometer wire is 100 cm long shown in figure When AC=40 cm, no deflection occurs in the galvanometer. What is the value of R ?

### In the experiment of potentiometer wire is 100 cm long shown in figure When AC=40 cm, no deflection occurs in the galvanometer. What is the value of R ?

physics-General

physics-

### Consider the potentiometer circuit shown. The potentiometer wire is 600 cm long and having restance 15r At what distance from the point A should the jockey touch the wire to get zero deflection in the galvanometer?

### Consider the potentiometer circuit shown. The potentiometer wire is 600 cm long and having restance 15r At what distance from the point A should the jockey touch the wire to get zero deflection in the galvanometer?

physics-General