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gcse physics

if you add a voltmeter to a series circuit does it become a parallel circuit and the whole circuit follows the rules for a parallel circuit? and in a parallel circuit, if components are connected in series in a branch does the p.d split?
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Original post by jajahjhajhsja
if you add a voltmeter to a series circuit does it become a parallel circuit and the whole circuit follows the rules for a parallel circuit? and in a parallel circuit, if components are connected in series in a branch does the p.d split?

Question 1 - technically it does become a parallel circuit but the voltmeter has a very high resistance so practically no current flows through that branch, so the circuit still acts as a series circuit with (we assume) all of the current flowing through the main branch
Question 2 - Yes, and the amount they split is equivalent to the source p.d since the circuit has the same p.d at source as along each branch

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