Why we specifically note resistance in a circuit while all part of a wire have some resistance..??? Answer: The resistance of the rest of the circuit compared to the resistance of the resistor is negligible. Incoming search terms:Why we specifically no...
Does transformer have any resistance,other than ohmic resistance? (Ajay Asked)
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You are given two nichrome wire of same length and different thickness Which wire will get heated first Give reason.? Asked Merlin Mary Mathew Answer: If the wires are connected one by one to a source, (or connected in parallel to the same source) the one having less resistance (Greater thickness) will get heated up first. [...]
An Electric Heater of resistance 8 ohm draws 15 A from service mains 2 hrs. Calculate rate at which heat is developed in heater. Please tell me the answer in watt and joule
“There is a wire whose resistance is R. it is streched, and its length gets increased to 2%. find new resistance.” – Knishka Agrawal asked Answer: The resistivity does not change due to stretching, but the length and area of cross section changes; but the volume remains constant. Therefore, resistance changes which can be calculated ...Read the full post
When stretched, the volume remains constant. So, A1l1=A2l2 Original resistance R1= rl1/A1 Final Resistance R2= rl2/A2 Percentage change in resistance = (R2-R1)x100/(R1) Substitute the values and try to get the answer
The resistances of 2 bulbs are in the ratio 1:2.if they are joined in series,find the ratio of the energy consumed by the 2 bulbs?
When connected in series, the same current