Relationship between voltage, power and current

  • #26
davenn
Science Advisor
Gold Member
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Check again the amount by which current and power changed. They don't change by the same factor.

I royally screwed up .... I blame old age and senility :wink: :rolleyes:

@imtiaz ... humble apologies answer b) current ..... should have been answer

for power

10V x 1 A = 10 W

double the voltage, the current doubles as correctly stated but the power dissipated quadruples

20V x 2A = 40W

@gneill .... cheers


Dave
 
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  • #27
I royally screwed up .... I blame old age and senility :wink: :rolleyes:

@imtiaz ... humble apologies answer b) current ..... should have been answer

for power

10V x 1 A = 10 W

double the voltage, the current doubles as correctly stated but the power dissipated quadruples

20V x 2A = 40W

@gneill .... cheers


Dave
So current is correct
 
  • #28
Hy,
If we double the voltage than what will be double
A. power
B. Current
C. Resistance
D. Both a & b
If circuit is simple
 
  • #29
Hy,
If we double the voltage than what will be double
A. power
B. Current
C. Resistance
D. Both a & b
If circuit is double
 

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