Four cells each of e.m.f 'E' are joined in parallel to form a battery. The equivalent e.m.f of the battery will be …………..22/25Four cells each of e.m.f 'E' are joined in parallel to form a battery. The equivalent e.m.f of the battery will be …………..4EEE=0E/4Giải thíchChọn đáp án B