A resistor, with a potential difference of 210 V across it, transfers electrical energy to thermal energy at the rate of 3030 W. What is the resistance of the resistor?

R=14.55 ohm

Explanation:

Given that

Potential difference ,ΔV = 210 V

Energy ,P = 3030 W

Lets take the resistance = R

We know that energy P is given as

Now by putting the values in the above equation we get

R=14.55 ohm  

That is why the resistance of the resistor will be 14.55 ohm.

14.6ohms

Explanation:

Potential difference(v)=210V

rate of energy=power(p)=3030watts

Resistance(r)=?

r=v^2/p

r=(210)^2/3030

r=44100/3030

r=14.6ohms

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2