ℝ??? ??? ????????? ?????? ??? ?????? …

ℝ??? ??? ????????? ?????? ??? ?????? ??? ?????????:- Resistance is a measure of the opposition to current flow in an electrical circuit. Resistance is measured in ohms. Also Resistivity, the electrical resistance of a conductor of unit cross-sectional area, and unit length. … A characteristic property of each material, resistivity is useful in comparing various materials on the basis of their ability to conduct electric currents. 1. Resistivity is independent of:- * 1 point nature of material temperature dimensions of material none of the above 2. As compare to short wires, long wires have _______ resistance. * 1 point more less same zero 3. As compare to thin wires, thick wires have _______ resistance. * 1 point more less same zero 4. The resistance of a wire depends upon: * 1 point cross-sectional area length of wire wire’s nature all of the above

Q.3A Free Proton and a Free Electron are Placed in a Uniform Field. Which of the Two Experiences Greater Force and Greater Acceleration?

A mirror is turned through 17 degree then the reflected ray is turned by

Derivation of ohm's law class 12

what us current

Lota graph showing the variation of current with voltage for the materials gaas on the graph mark the reason where a resistance is negative and Om is obey

A Carbon resistor has three strips of red colour and a gold strip. What is the value of resistor? What is its tolerance?

Three charges q,-4q,2q are placed at vertex of equilateral triangle find amount of work done to make its set up

A pith ball may become charge d by gaining or losing

Two metallic sphere of radii 1 cm and 3 cm are given charge of minus 1 into 10 ke power 2 coulomb and 5 x 10 power 2 respectively if these are connected by conducting wire the final charge on the bigger sphere is

two pith -balls each weighing 10-³ kg are suspended from the same point by means of silk threads -0.5 m long .on charging the balls equally, they are found to repel each other to a distance of 0.2 m .calculate the charge on each ball .