a student builds a simple circuit with a single resistor with resistance R and measures an electric potential difference across the resistor .Then the student replaces the resistor with a new one of resistance 2R and keeps the electric potential difference the same .what is the current status through the new circuit in terms of the original current​

Atotal charge of –6.50 µc is uniformly distributed within a sphere that has a radius of 0.150 m. what is the magnitude and direction of the electric field at 0.300 m from the surface of the sphere? a) 2.89 × 105 n/c, radially inward b) 6.49 × 105 n/c, radially outward c) 4.69 × 105 n/c, radially inward d) 9.38 × 105 n/c, radially outward e) 1.30 × 106 n/c, radially inward

Clothes dryer uses about 7 amps of current from a 240 volt line. how much power does it use?

What is the measurement of how fast an object moves relative to a reference point?