Explain Ohm's Law

Ohm's Law

ZA

Related Physics GCSE answers

All answers ▸

It takes 4200 Joules to heat up 1 kg of water by 1 C^o. If you have a kettle with a power of 2500 Watts, how long will it takes to boil 0.8 kg of water from an initial temperature of 25 C^o to the nearest second??


A 950 kg car accelerates from 0 to 33 m/s in 11 seconds. a) Calculate the acceleration of the car b) Calculate the force needed to produce this acceleration c) The car claims a top speed of 110 miles/hr. Explain why there must be a top speed for any car


Explain how the resistance of a filament lamp changes as the potential difference across it increase


Explain, with reference to the Schwarzschild radius, why the sun isn’t a black hole.