Range of ammeter AR = 3 ampere. The number of divisions in ammeter is 30. Therefore, the least count of ammeter = Range/ total division. = 3/30 =... View Article
The speedometer of a car measures instantaneous speed of the car. Odometer is a device used to record the distance travelled by the car. An... View Article
Answer: Power (P) = 2kw =2000W Current (I) = 5A Voltage (V) = 220V Power = current × voltage P = I × V Current = Power/voltage I = P/V I... View Article
The image formed on the cinema screen is always formed due to the actual meeting of rays. A real image is formed on a cinema screen . Concave... View Article
A cell is a single electrical energy source which uses chemical reactions to produce a current. An electrical cell is an 'electrical power... View Article
Scalar quantities like distance , speed etc cannot be negative. Of the options, distance cannot be a negative value. The distance travelled will... View Article
During the day time the surafce of the sea gets heated up and the air in contact with the surface also heats up due to convection . Convection... View Article
When different materials are connected in parallel the total available heat energy per second will be shared across both of them. The effective... View Article
Sonometer is basically used to study the relationship between frequency, tension , linear mass density and length of a stretched string. A... View Article
To measure the distance travelled we use the device named odometer. The distance travelled by vehicle between any two points can be known by the... View Article
Supplementary units are the dimensionless units that are used along with the base units to form derived units in the International system.... View Article
Resistance is the characteristic of a material which opposes the flow of electric current. It depneds on various factores. Here are some factors... View Article
Answer: The electrical resistance of a circuit is the ratio between the voltage applied to the current flowing through it. According to Ohm’s... View Article
Given: An electric bulb is rated 220V and 100W Find out: Power consumed when it is operated on 110 V Explanation: In physics, an electric... View Article
Answer: A racing car has a uniform acceleration of 4m/s square, it will cover 200m in 10sec after start. The initial velocity (u) = 0 The... View Article
Speedometer of the car measures the instantaneous speed of the car. It displays the instantaneous speed of a vehicle . The first speedometers... View Article
The specific magnetic loading is defined as the total flux per unit area over the surface of the armature periphery and is denoted by Bav also... View Article
The time period of the simple pendulum is independent of the amplitude, provided the amplitude is sufficiently small. This property is known as... View Article
The law of static friction states that the force of friction, that resists the motion of the body as it starts to fall down the surface, is... View Article
