List I | List II | ||
A | Pleurobrachia | I | Mollusca |
B | Radula | II | Ctenophora |
C | Stomochord | III | Osteichthyes |
D | Air bladder | IV | Hemichordata |
AB is a part of an electrical circuit (see figure). The potential difference \(V_A - V_B\), at the instant when current \(i = 2\) A and is increasing at a rate of 1 amp/second is: