Question

(c) What is the p.d. at the terminals of the
battery?​

Answer 1

ᴇʟᴇᴄᴛʀɪᴄᴀʟ ᴘᴏᴛᴇɴᴛɪᴀʟ ᴅɪꜰꜰᴇʀᴇɴᴄᴇ ɪꜱ ᴀʟꜱᴏ ᴄᴀʟʟᴇᴅ ᴠᴏʟᴛᴀɢᴇ. ᴡʜᴇɴ ʏᴏᴜ ᴍᴇᴀꜱᴜʀᴇ ᴛʜᴇ ᴘᴏᴛᴇɴᴛɪᴀʟ ᴅɪꜰꜰᴇʀᴇɴᴄᴇ ᴀᴄʀᴏꜱꜱ (ᴏʀ ʙᴇᴛᴡᴇᴇɴ) ᴛʜᴇ ᴛᴇʀᴍɪɴᴀʟꜱ ᴏꜰ ᴀ ʙᴀᴛᴛᴇʀʏ ᴛʜᴀᴛ ɪꜱ ɪɴ ᴀ ᴄᴏᴍᴘʟᴇᴛᴇ ᴄɪʀᴄᴜɪᴛ ʏᴏᴜ ᴀʀᴇ ᴍᴇᴀꜱᴜʀɪɴɢ ᴛʜᴇ ᴛᴇʀᴍɪɴᴀʟ ᴘᴏᴛᴇɴᴛɪᴀʟ ᴅɪꜰꜰᴇʀᴇɴᴄᴇ ᴏꜰ ᴛʜᴇ ʙᴀᴛᴛᴇʀʏ. ᴀʟᴛʜᴏᴜɢʜ ᴛʜɪꜱ ɪꜱ ᴍᴇᴀꜱᴜʀᴇᴅ ɪɴ ᴠᴏʟᴛꜱ ɪᴛ ɪꜱ ɴᴏᴛ ɪᴅᴇɴᴛɪᴄᴀʟ ᴛᴏ ᴛʜᴇ ᴇᴍꜰ.

Answer 2

Hola mate...✌️✌️✌️✌️

$\huge \purple {ANSWER}$

Electrical potential difference (P.D.) is also called voltage. When you measure the potential difference across (or between) the terminals of a battery that is in a complete circuit you are measuring the terminal potential difference of the battery. Although this is measured in volts it is not identical to the emf.