MP Police PC · Science & Simple Arithmetic
Mechanics, force, energy, electricity and magnetism.
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Q1 · Physics Basics · EASY
A porter at a railway station lifts a luggage bag of 30 kg from the ground and places it on his head at a height of 1.5 m. Taking g = 10 m/s², what is the work done by the porter against gravity?
Q2 · Physics Basics · MEDIUM
An electric bulb is rated at 220 V, 100 W. If it is used for 5 hours daily, how many units (kWh) of electrical energy will it consume in the month of April (30 days)?
Q3 · Physics Basics · MEDIUM
A car of mass 1000 kg is moving with a velocity of 20 m/s. The driver applies brakes and the car comes to rest after covering a distance of 50 m. What is the magnitude of the average braking force applied?
Q4 · Physics Basics · HARD
Two resistors of 6 ohm and 12 ohm are connected in parallel across a 12 V battery. What is the total current drawn from the battery?
Q5 · Physics Basics · EASY
An object of mass 8 kg is moving with a velocity of 6 m/s. What is the kinetic energy of the object?