Answer:
240 ohms
Explanation:
From Ohms law we deduce that V=IR and making R the subject of the formula then R=V/I where R is resistance, I is current and V is coltage across. Substituting 120 V for V and 0.5 A for A then
R=120/0.5=240 Ohms
Alternatively, resistance is equal to voltage squared divided by watts hence 
Answer:
Amount of energy required to change the 1kg of a substance without changing its temperature.
Answer:
his displacement is 5m
Explanation:
A is the stage at which a man starts walking. He's walking 4 m north, i.e. AB, then going 3 m east, i.e. BC. The displacement is the connecting straight line between the original and the final position. The displacement is thus the AC hypotenuse of the right-angle triangle. By applying the theorem of hypotenuse, we get
⇒displacement=16+9−−−−−√=25−−√=5m
Opposition for the current flow
Explanation:
- Resistance is defined as the ability pf the conductor to oppose the flow of electrons through it. It is usually represented in Ohm.
- Resistance is an important parameter in a circuit design and it should be properly designed.
- Resistance of a conductor depends upon the material nature, length of the conductor and area of cross section.
- In conductor, Resistance is low. It is due to that charges flow through the conductor freely.
Its like a suspended wood with a lead sphere attached to each of its ends
