तीन समानांतर प्रतिरोधी शाखाएं एक डीसी आपूर्ति से जुड़ी हैं। यदि शाखा प्रतिरोध R1 : R2 : R3 = 2 : 4 : 6 के अनुपात में हैं, तो शाखा धाराओं I1 : I2 : I3 का अनुपात क्या होगा?

A wire of resistance 5 Ω has its length tripled (3L) and its cross-sectional area divided by three (A/3). What is its new resistance?

Two wires, A and B, made of the same material, have the same length. If the cross-sectional area of wire A is twice that of wire B, the ratio of their resistances RA : RB is: