2/A mains electricity hairdryer has a resistance of 46 Ω and a current of 5 A flows through it when in use. What is the voltage
across the hairdryer? (This is the mains voltage in the UK)
3/ What is the voltage across a lamp of resistance 4 Ω if a current of 2.5 A flows through it?
Please help :)
3/ What is the voltage across a lamp of resistance 4 Ω if a current of 2.5 A flows through it?
Please help :)
1 answer:
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Answer:
a) For y = 102 mA, R = 98.039 ohms
For y = 97 mA, R = 103.09 ohms
b) Check explanatios for b
Explanation:
Applied voltage, V = 10 V
For the first measurement, current
According to ohm's law, V = IR
R = V/I
Here,
For the second measurement, current
b)
A linear equation is of the form y = Gx
The nominal value of the resistance = 100 ohms